One of my co-workers will cover my shift next Tuesday.
"シフトをカバーしてくれる"
One of my co workers covers my shift next Tuesday
->One of my co-workers will cover my shift next Tuesday.
->My co-worker is going to cover my shift next Tuesday.
他：
- I have someone who will fill in for my shift next Tuesday.
- My co-worker will take over my shift for me next Tuesday.
One of my co-workers is going to cover my shift next Tuesday.
この場合、次のように言うと自然な感じになりますよ。
ーOne of my co-workers is going to cover my shift next Tuesday.
「同僚の一人が来週の火曜のシフトをカバーしてくれる」
別の例文：
ーMy husband is going to pick up my dry-cleaning on his way home from work today.
「今日夫が仕事帰りにクリーニングを取ってきてくれる」
ーMy husband is going to make supper for our family tonight.
「今夜夫が家族のために夕飯を作ってくれる」
ご参考まで！
アメリカ合衆国 
カナダ 
